Concrete-block-molding machine.



s. ALLEN & F. L. BAILEY. CONCRETE BLOCK MOLDING MACHINE.

APPLICATION FILED NOV. 19' 1910. I

Patented Apr. 16, 1912.

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Patented Apr. 16, 1912.

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S. ALLEN & F. L. BAILEY.

CONCRETE BLOGK MOLDING MACHINE.

APPLICATION FILED NOV.19. 1910.

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S. ALLEN & 'F. L. BAILEY.

CONCRETE BLOCK MOLDING MACHINE.

APPLICATION PILBD NOV.19, 1910.

1,023,778. Patented Apr. 16, 1912.

3 SHEET8-SHEET 1.

COLUMBIA PLANoonAPH COqWASHINGTON. D. C.

SAM ALLEN AND FRANK L. BAILEY, OF OKMULGEE, OKLAHOMA.

CONCRETE-BLOCK-MOLDING MACHINE.

Specification of Letters Patent.

Patented Apr. 16, 1912.

Application filed November 19, 1910. Serial No. 593,284.

To all whom it may concern:

Be it known that we, SAM ALLEN and FRANK L. BAILEY, citizens of the United States, residing at Okmulgee, in the county of Okmulgee and State of Oklahoma, have invented certain new and useful Improvements in Concrete-Bloclr-Molding Machines, of which the following is a specification.

This invention is designed to construct a machine for molding concrete blocks which will provide a means for automatically withdrawing the cores from the molds as the blocks are tamped.

It also contemplates the construction of a machine in which the cores will aut ornatically be projected into the molds subsequent to the removal of the blocks.

This invention is also particularly designed as an improvement over the con struction set forth in our Letters Patent No. 975,104, issued November 8, 1910.

With the above and other objects in view, this invention consists in the construction, combination, and arrangement of parts, all as hereinafter more fully described, claimed and illustrated in the accompanying drawings, wherein Figure 1 is a side elevation of a machine constructed in accordance with the present invention, parts thereof being broken away;

Fig. 2 is a top plan view thereof; Fig. 3 is a fragmentary rear elevation of the tamper and core removing mechanism; Fig. 4 is a horizontal section taken along line 44 of Fig. 1; Fig. 5 is a central, vertical section of the mold illustrating the core mounted therein and setting forth the mechanical movement for automatically withdrawing the core; Fig. 6 is a perspective view of a modification of the core projecting therein; Fig. 7 is a central, vertical section thereof.

The molding machine forming the subject matter of the present invention comprises a frame having a vertical shaft mounted therein, said shaft carrying a table upon which are mounted a series of molds. Each of these molds is provided with a cooperating core which projects through said table and is reciprocatingly mounted on a frame disposed below the'latter. A tamper operates in the frame carrying the shaft and is constructed to cooperate with each mold successively, a mechanism being provided which operates from said tamper for removing the cores from the molds subsequent to the tamping operation. After the cores have Reference being had more particularly to the drawings, 10 indicates a base from which there extends the vertical frames 11 and 12. A bearing 18 is mounted on the base 10 adjacent to the frame 11 and provides a mounting for the lower terminal of the shaft carrying the table. At the upper end of the frame 11 is mounted a horizontal bar or arm 14, which forms a bearing for the upper end of the shaft 15, said shaft being rotatably mounted in the bearing 18. A table 16 is rigidly mounted on the shaft 15, and is adapted to rotate therewith, said table having secured adjacent to the periphery of the under side thereof a series of downwardly extending rods 17 on the lower extremities of which is rigidly and securely mounted a ring 18. The table 16 is pierced by the rectangular opening 19 between each alternate pair of rods 17, said opening being provided in order that the cores may be projected to an elevation above the upper surface of the table. The openings 19 are surrounded by the molds 20 rigidly secured to the table and of any suitable structure, preferably, however, constructed of pivotally connected sections. This construction permits the block to be readily removed from each mold.

Carried by the ring 18 and disposed centrally with respect to the openings 19 are a series of vertical rods 21 which extend so that the upper terminals thereof are sub stantially flush with the table 16. A. tube or sleeve 22 is reciprocatingly mounted on each rod 21, said tube being provided at the upper terminal with the flange 23 upon which is carried the core 24. The cores 24 are provided with circular openings therein for the reception of the rods 21 when the cores are located below the table. Each sleeve 22 is provided with an outwardly extending projection 24 which cooperates with the mechanism for removing the cores from the molds as will be hereinafter more fully described. A lever 25 is pivoted to one of the rods 17 of each pair between which each core operates, and with which core said lever is adapted to cooperate. Each lever is connected to the sleeve 22 of the oooperating core by the link 26. A spring 27 is interposed between each lever 25 and the supporting rod 17. Thus it will be understood that when a retaining force is removed from the lever 25 the springs will normally project the cores up through the openings 19. One of each pair of rods 17 is provided with an inwardly extending lug 28 which cooperates with the catch 29 pivotally carried by each lever 25 to hold the cores below the surface of the table 16. The catches 29 are actuated by the springs 30 interposed between said catches and the levers 25. From the foregoing it will be readily understood that when the cores are removed from the molds 20, the catches will engage the lugs 28 and retain said cores below the surface of the table 16. In order to automatically project the cores into the molds 20 after the block has been removed therefrom, a stop or projection 31 is mounted on the base 10 and lies directly in the path of the catches 29. Thus it will be seen that upon rotating the table, the catches will come successively into engagement with the projection 31, releasing them from engagement with the lugs 28, thereby projecting said cores through said table into the molds successively.

A tamper 32 reciprocates in the frame 11 and operates directly over the mold 20 located beneath the same, and held in this position by the spring actuated lever 33 which is provided with a hook at its inner terminal do engage the notches in the periphery of the table as illustrated in dotted lines in Fig. 2. This tamper is reciprocatcd. by the rotation of a shaft 34 operating the eccentrically mounted disk 35 which reciprocates the link 36, thereby moving the tamper 32 vertically. The shaft 34 is operated by a train of gears driven from the pulleys 36. A transverse bar or projection 37 is carried by the shaft 34 and upon the rotation of said shaft contacts with the bearing member 38 of a lever 39 mounted on the frame 11. This lever is connected by a link 40 to a lever 41 pivotally mounted on the base and extending inwardly toward the table. Thus it will be seen that, upon the rotation of the shaft 34 in the direction of the arrow set forth in Fig. 3, the projection or member 37 will contact with th bearing member 38 forcing the lever 39 and the link 40 downwardly, imparting a similar motion to the lever 41. At the inner terminal of the lever 41 is adjustably mounted a plate 42 which normally rests over the projections 24 carried by the sleeves 22 of the cores. Thus, by the downward movement of the lever 41, the plate 42 will engage the projection 24 of the sleeve 22 of the core, drawing the core downwardly until the catch 29 engages the adjacent lug 28. The downward movement of the core in withdrawal starts just as the tamper reaches the lower limit of its'movement, and after the tamping or pressing operation is completed. The tamper 32 and the core are withdrawn from the mold simultaneously.

The operation of the machine as constructed is as follows: For convenience, lettering the three molds A, B, and C, the mold A is being tamped and the core will be withdrawn after the completion of the tamping movement of the part. As the mold B already has its core withdrawn, the table is rotated causing the core of the mold B to be released and projected into the mold. lVhile the mold A is being tamped, the mold C is being filled with concrete. Thus, upon the rotation of the table, the mold C will be brought under the tamp and the mold A with its core withdrawn will be swung to the position occupied by the mold B in Fig. 2. While the mold C is being tamped, the mold A is opened and the block withdrawn, at the same time the mold B is filled with concrete, the operation being continued indefinitely.

In the modification set forth in Figs. 6 and 7, 16 indicates a table having a ring 18 carried under the same through the inst-rumentality of the rod 17 The cores 23' operate on the rod 21 through the instrumentality of the sleeve 22, said sleeve having the transverse bar 22 mounted thereon to which are secured the ropes or cords 22', said ropes or cords extending over the pulleys 45 and cooperating with the weights 46 operating on the rods 17. From this construction it will readily be understood that the cores 23 are projected into molds through the instrumentality of the weights or counterbalances 46, said cores being withdrawn from the molds by the projection 24 formed on the sleeve 22'.

Having thus fully described our invention, what is claimed as new is 1. In a machine of the class described,the combination with a rotatably mounted table, of a series of molds mounted thereon, spring actuated cores mounted on the under side of said table and adapted to be projected into said molds, a tamper adapted to cooperate with each of said molds successively, means whereby said cores may be withdrawn from said molds after the tamping operation, automatically operating catches whereby said cores may be temporarily retained below the surface of said table, and means for positively releasing the cores from the retaining catches aforesaid.

2. In a machine of the class described, the combination with a rotatably mounted table, of a series of molds carried thereby, cores reciprocatingly mounted on the under side of said table and adapted to cooperate with said molds, spring actuated levers mounted on the under side of said table and pivotally connected to said cores adapted to project the latter into said molds, spring actuated catches carried by said levers, and means carried by the under side of said table adapted to engage said catches and retain said cores under said table.

3. In a machine of the class described, the combination with a rotatably mounted table, of a series of molds carried thereby, cores reciprocatingly mounted on the under side of said table and adapted to cooperate wit-h said molds, spring actuated levers mounted on the under side of said table and pivotally connected to said cores adapted to project the latter into said molds, spring actuated catches carried by said levers, means carried by the under side of said table adapted to engage said catches and retain said cores under said table, and means disposed under said table adapted to suecessively engage said catches thereby releasing the same and permitting them to be projected into said molds.

4. In a machine of the class described, the combination with a rotatably mounted table, of a series of molds mounted thereon, spring actuated cores mounted on the under side of said table and adapted to be proj ected into said molds, a tamper adapted to cooperate with each of said molds succes- Copies of this patent may be obtained for five cents each,

sively, means for operating said tamper, and means operable by said last named means whereby the cores may be withdrawn from the molds after the tamping operation.

5. In a machine of the class described, the combination with a rotatably mounted table, of a series of molds mounted thereon, spring actuated cores mounted on the under side of said table and adapted to be projected into said molds, a tamper adapted to cooperate with each of said molds successively, means for operating said tamper, a lever pivoted below the level of said table adapted to operate each of said cores successively, a lever pivoted above said last named lever, a connection between said levers, and a projection carried by said tamper operating means adapted to contact with the upper of said levers thereby swinging the lower lever and successively remow ing the cores from said molds.

In testimony whereof we aflix our signatures in presence of two witnesses.

SAM ALLEN. FRANK L. BAILEY. Witnesses:

C. E. BnARsE, THOMAS J. FARRAR.

by addressing the Commissioner of Patents,

Washington, D. G. 

